A method and device for acquiring at least a part of an x-ray data set with at least one x-ray device. The x-ray data set includes at least one first x-ray image data set and at least one second x-ray image data set acquired separated in time that are to be evaluated together. Both x-ray image data sets show a region of interest of a patient that is subject to heart motion at different phases of a heart cycle. The second x-ray image data set is acquired triggered at a beginning of each heart cycle covered by the acquisition and with an acquisition rate such that the phases of the acquired x-ray image data set match phases of the first x-ray image data set.
